/*
MD_Parola - Library for modular scrolling text and Effects
  
See header file for comments
  
Copyright (C) 2013 Marco Colli. All rights reserved.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <MD_Parola.h>
#include <MD_Parola_lib.h>
/**
 * \file
 * \brief Implements wipe effect
 */

void MD_PZone::effectWipe(bool bLightBar, bool bIn)
// Wipe the message over with a new one
// Print up the whole message and then remove the parts we 
// don't need in order to do the animation.
{
	if (bIn)	// incoming
	{
		switch (_fsmState)
		{
		case INITIALISE:
			PRINT_STATE("I WIPE");
			setInitialEffectConditions();
			_fsmState = PUT_CHAR;
			// fall through to next state

		case GET_FIRST_CHAR:
		case GET_NEXT_CHAR:
		case PUT_CHAR:
		case PAUSE:
			PRINT_STATE("I WIPE");
			if (_fsmState == PAUSE)
				_fsmState = PUT_CHAR;

			commonPrint();
      
			// blank out the part of the display we don't need
			FSMPRINT(" - Clear ", _nextPos);
			FSMPRINT(" to ", _endPos);
			FSMPRINT(" step ", _posOffset);
			for (uint8_t i=_nextPos; i != _endPos; i += _posOffset)
				_MX->setColumn(i, EMPTY_BAR);

			if (bLightBar && (_nextPos != _endPos)) _MX->setColumn(_nextPos, LIGHT_BAR);

			// check if we have finished
			if (_nextPos == _endPos) _fsmState = PAUSE;

			_nextPos += _posOffset;	// for the next time around
			break;

		default:
			PRINT_STATE("I WIPE");
			_fsmState = PAUSE;
		}
	}
	else	// exiting
	{
		switch (_fsmState)
		{
		case PAUSE:
		case INITIALISE:
			PRINT_STATE("O WIPE");
			setInitialEffectConditions();
			_fsmState = PUT_CHAR;
			// fall through to next state

		case GET_FIRST_CHAR:
		case GET_NEXT_CHAR:
		case PUT_CHAR:
			PRINT_STATE("O WIPE");
			commonPrint();

			// blank out the part of the display we don't need
			FSMPRINT(" - Clear ", _nextPos);
			FSMPRINT(" to ", _endPos);
			FSMPRINT(" step ", _posOffset);
			for (uint8_t i=_startPos; i != _nextPos; i += _posOffset)
				_MX->setColumn(i, EMPTY_BAR);

			if (bLightBar && (_nextPos != _endPos)) _MX->setColumn(_nextPos, LIGHT_BAR);

			// check if we have finished
			if (_nextPos == _endPos) _fsmState = END;

			_nextPos += _posOffset;	// for the next time around
			break;

		default:
			PRINT_STATE("O WIPE");
			_fsmState = END;
			break;
		}
	}
}
